From patchwork Mon Sep 12 15:30:27 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gokul krishna Krishnakumar X-Patchwork-Id: 12973749 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 974A1C6FA8B for ; Mon, 12 Sep 2022 15:30:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230086AbiILPax (ORCPT ); Mon, 12 Sep 2022 11:30:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55138 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229965AbiILPaw (ORCPT ); Mon, 12 Sep 2022 11:30:52 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 783A42251B; Mon, 12 Sep 2022 08:30:51 -0700 (PDT) Received: from pps.filterd (m0279868.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 28CF5hkp012145; Mon, 12 Sep 2022 15:30:43 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=qcppdkim1; bh=Ij81E1OQlgZvSM3xquEVml12KCb9/5N2KS1Kns1QJh4=; b=YKEvUmcaeNrbyaaKdROwNIBIXvchZJ/MAS8v0lg6fc7FyRsByAQEL34VbuVSgYlKcGxy 4p6VqwQHznhfmBJWyM8ti49bxzc0PAMs2Kvgq+rhLRyAi+SBA0irYC3KhIwIikif+mD2 wK6XdEIVIpweV8NfEkrh0RTtQk/+Z9/cHV9UK0lLQN8PPv1xZtCfeJqAIne4baezpEQR 0ACjtsmuqYg4KS5+28pH+Cj0ejLP7lklH5KM87D4zx57L5tAF1yp7bC7wavJBQhWB9UD T9/PMeVa07S6GpAAcg5tNhBIOccABQvhn97vm47E2LR6Jpi9kfll04krSyw0BQpwu0aW kQ== Received: from nalasppmta05.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3jgk634fy3-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 12 Sep 2022 15:30:42 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA05.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 28CFUfHg010242 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 12 Sep 2022 15:30:41 GMT Received: from hu-gokukris-sd.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.29; Mon, 12 Sep 2022 08:30:41 -0700 From: Gokul krishna Krishnakumar To: Andy Gross , Bjorn Andersson , Konrad Dybcio , Mathieu Poirier CC: , , "linux-kernel @ vger . kernel . org--cc=Trilok Soni" , Satya Durga Srinivasu Prabhala , Rajendra Nayak , "Elliot Berman" , Guru Das Srinagesh , Gokul krishna Krishnakumar Subject: [PATCH v1 1/3] remoteproc: qcom: q6v5: Send subdevice notifications before panic Date: Mon, 12 Sep 2022 08:30:27 -0700 Message-ID: <842a6b6307d26874959d29f2065aad544ff0b86c.1662995608.git.quic_gokukris@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: References: MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: rH8S5i5tDBUTXa49tWc_uM5agFKPdzPE X-Proofpoint-ORIG-GUID: rH8S5i5tDBUTXa49tWc_uM5agFKPdzPE X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.528,FMLib:17.11.122.1 definitions=2022-09-12_10,2022-09-12_02,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 priorityscore=1501 impostorscore=0 suspectscore=0 bulkscore=0 clxscore=1015 adultscore=0 phishscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2207270000 definitions=main-2209120052 Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org Subdevice notifications after a remoteproc has crashed are useful to any clients that might want to preserve data pertaining to the driver after the remoteproc crashed. Sending subdevice notifications before triggering a kernel panic gives these drivers the time to do collect this information. Change-Id: Id6e55fb038b70f54ff5854d2adff72b74b6a9570 Signed-off-by: Gokul krishna Krishnakumar --- drivers/remoteproc/qcom_q6v5.c | 31 +++++++++++++++++++++++++++++++ drivers/remoteproc/qcom_q6v5.h | 2 ++ 2 files changed, 33 insertions(+) diff --git a/drivers/remoteproc/qcom_q6v5.c b/drivers/remoteproc/qcom_q6v5.c index 497acfb..89f5384 100644 --- a/drivers/remoteproc/qcom_q6v5.c +++ b/drivers/remoteproc/qcom_q6v5.c @@ -15,6 +15,7 @@ #include #include #include +#include #include "qcom_common.h" #include "qcom_q6v5.h" @@ -94,6 +95,29 @@ int qcom_q6v5_unprepare(struct qcom_q6v5 *q6v5) } EXPORT_SYMBOL_GPL(qcom_q6v5_unprepare); +static void qcom_q6v5_crash_handler_work(struct work_struct *work) +{ + struct qcom_q6v5 *q6v5 = container_of(work, struct qcom_q6v5, crash_handler); + struct rproc *rproc = q6v5->rproc; + struct rproc_subdev *subdev; + + mutex_lock(&rproc->lock); + + list_for_each_entry_reverse(subdev, &rproc->subdevs, node) { + if (subdev->stop) + subdev->stop(subdev, true); + } + + mutex_unlock(&rproc->lock); + + /* + * Temporary workaround until ramdump userspace application calls + * sync() and fclose() on attempting the dump. + */ + msleep(100); + panic("Panicking, remoteproc %s crashed\n", q6v5->rproc->name); +} + static irqreturn_t q6v5_wdog_interrupt(int irq, void *data) { struct qcom_q6v5 *q6v5 = data; @@ -113,6 +137,9 @@ static irqreturn_t q6v5_wdog_interrupt(int irq, void *data) dev_err(q6v5->dev, "watchdog without message\n"); q6v5->running = false; + if (q6v5->rproc->recovery_disabled) + schedule_work(&q6v5->crash_handler); + rproc_report_crash(q6v5->rproc, RPROC_WATCHDOG); return IRQ_HANDLED; @@ -134,6 +161,9 @@ static irqreturn_t q6v5_fatal_interrupt(int irq, void *data) dev_err(q6v5->dev, "fatal error without message\n"); q6v5->running = false; + if (q6v5->rproc->recovery_disabled) + schedule_work(&q6v5->crash_handler); + rproc_report_crash(q6v5->rproc, RPROC_FATAL_ERROR); return IRQ_HANDLED; @@ -354,6 +384,7 @@ int qcom_q6v5_init(struct qcom_q6v5 *q6v5, struct platform_device *pdev, if (IS_ERR(q6v5->path)) return dev_err_probe(&pdev->dev, PTR_ERR(q6v5->path), "failed to acquire interconnect path\n"); + INIT_WORK(&q6v5->crash_handler, qcom_q6v5_crash_handler_work); return 0; } diff --git a/drivers/remoteproc/qcom_q6v5.h b/drivers/remoteproc/qcom_q6v5.h index 5a859c4..b1654be 100644 --- a/drivers/remoteproc/qcom_q6v5.h +++ b/drivers/remoteproc/qcom_q6v5.h @@ -29,6 +29,8 @@ struct qcom_q6v5 { int handover_irq; int stop_irq; + struct work_struct crash_handler; + bool handover_issued; struct completion start_done;